The discovery of new exoplanets by astronomers has become quite routine in the past several years, with new findings being announced on a regular basis. So far, the number of known and candidate worlds numbers a few thousand with many more expected in the years ahead. While most found so far are gas giants like Jupiter or Saturn, as they are the easiest to find, among the growing numbers of exoplanets are ones which are about the same size of Earth or a bit larger. But even smaller worlds are starting to be discovered now, and a new group of five planets orbiting a very old star 117 light-years away fall into that category, as announced by astronomers on Jan. 26, 2015.
Last week was a good one for exoplanet enthusiasts, with yet more news relating to how other worlds are now being found by the thousands, and that there may be many habitable planets out there. Now there’s already another discovery being announced of three more planets almost the same size as Earth, all orbiting a nearby star.
Even after problems threatened to end the Kepler space telescope’s mission for good last year, the planet-hunting observatory has continued to help astronomers discover thousands of exoplanets orbiting other stars, including ones that are potentially habitable. As reported yesterday at the American Astronomical Society (AAS) meeting, Kepler has now confirmed just over 1,000 exoplanets, with thousands more awaiting confirmation. A growing number are also potentially habitable, at least by Earthly standards.
The Kepler space telescope has found its first new exoplanet, a “super-Earth,” of its secondary mission phase. The discovery adds to a current tally of 996 confirmed exoplanets and 4,183 planetary candidates already found by the revolutionary planet-hunting telescope.
Astronomers on Monday made a “big” announcement about exoplanets, and it is big – literally. Another new world has been discovered, which is quite routine now these days, but this one is different, and unexpected; a planet which is more than twice as large as Earth and about 17 times heavier, a sort of “mega-Earth” as some have referred to it. Nothing else like it has been seen before, until now. The new discovery was announced at a press conference during a meeting of the American Astronomical Society (AAS).
There is some good news for planet-hunters this week: The proposed K2 mission extension for the Kepler Space Telescope has been been approved by NASA. The approval, based on a recommendation from the agency’s 2014 Senior Review, means that the Kepler mission will have at least two more years to continue its search for exoplanets, after having already found thousands of planetary candidates and nearly a thousand confirmed planets to date.
Today was another big day for those interested in space exploration, and the search for other Earth-like alien worlds in particular – the first Earth-sized exoplanet orbiting another star in the habitable zone has been discovered, it was announced by astronomers with the Kepler space telescope mission.